WIP: Add binutils-2.30

• https://phabricator.collabora.com/T18715
• https://build.internal.steamos.cloud/project/monitor/home:smcv:branches:steamrt:scout:main:t18715

/cc @timo, @denittis, @jpwhiting FYI, but I'll merge this unreviewed if testing is successful.

Requires packaging/scout/binutils!1 (and CI will fail until that has landed).

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• SDK: Add binutils-2.30

  tests/sdk/binutils-2.30: Assert that it works, and accepts an option that didn't exist in the baseline version of binutils.